不同类型人工晶状体对白内障术后对比敏感度的影响

Study of contrast sensitivity function in postoperative intraocular lens implantation patients

目的:研究不同类型人工晶状体植入术后暗视和明视下对比敏感度(contrast sensitivity,CS)的变化,评估患者术后的视觉质量。方法:采用对照研究的方法:实验组为2010-03/10期间于我院行超声乳化白内障吸除联合人工晶状体植入术的老年性白内障患者50例55眼。全部患者分为3组,分别植入Sensar AR40e人工晶状体17眼,Bausch&Lomb LI61SE人工晶状体18眼和Array SA40N多焦点人工晶状体20眼,对照组为年龄相匹配的志愿者12例24眼。SensarAR40e人工晶状体的光学材料为疏水性丙烯酸酯,另外2种人工晶状体的光学材料为硅凝胶。检查患者术后和志愿者的最佳矫正视力后暗视和明视下对比敏感度。结果:Array SA40N组的CS除明视下0.8cpd以外在各空间频率较正常对照组均明显下降;Bausch&Lomb LI61SE组的CS在除0.8cpd以外其余各空间频率较正常对照组均明显下降;Sensar AR40e组在0.8cpd,1.5cpd的CS与正常对照组无明显差异,在其余各空间频率较正常对照组均明显下降。Array SA40N组在12cpd,20cpd的CS较其他两组人工晶状体眼下降。Sensar AR40e组和Bausch&LombLI61SE组各空间频率的CS相比较均无明显差异。结论:人工晶状体眼的CS较同龄正常对照组均明显下降;多焦点人工晶状体眼较单焦点人工晶状体眼的CS在高频区明显下降;疏水性丙烯酸酯与硅凝胶两种材料的人工晶状体对白内障术后CS的影响无明显差异。

AIM： To observe contrast sensitivity （CS）function recovery in postoperative senile cataract patients and to discuss the influencing factors of recovering visual quality. METHODS： Controlling investigative method was applied. Experimental group： 54 cases （55 eyes） were operated with Phaco ＋ Sensar AR40e （17 eyes）, Phaco ＋ Bausch＆Lomb LI61SE（18 eyes）or Phaco ＋ Array SA40N （20 eyes） lens implantation. The optical materials of Sensar AR40e intraocular lens was hydrophobic acrylate, those of the other 2 types of intraocular lens were intraocular silicone. Controlling group： 12 cases （24 eyes） were aged matching volunteers, eliminating ophthalmology and other body diseases. The patients and the volunteer were examined their contrast sensitivity under the best-corrected visual acuity in dark and bright conditions. RESULTS： The CS of Array SA40N group was lower than the normal control group in any other spatial frequencies excluding 0.8cpd in bright conditions. The CS of Bausch＆Lomb LI61SE group was lower than the normal control group in any other spatial frequency excluding 0.8cpd. The CS of Sensar AR40e group was lower than the normal control group in any other spatial frequencies excluding 0. 8cpd and 1. 5cpd. The CS of Array SA40N group was lower than the other two intraocular lens groups excluding 12cpd and 20cpd. There were no significant differences in all spatial frequencies between the CS of Sensar AR40e group and Bausch＆Lomb Lt61SE group. CONCLUSION.. The CS of intraocular lens was significantly lower than that of the aged matching normal control group; the CS of the multifocal intraocular lens was significantly lower than that of the monofocal intraocular lens in the high frequency area; there were no significant differences between the CS of hydrophobic acrylic lens and silicone intraocular lens.